The material of the dust bag is a cloth or felt woven from synthetic fibers, natural fibers or glass fibers. Sewing the cloth or felt into a cylindrical or flat filter bag as needed. According to the nature of the flue gas, a filter material suitable for the application conditions is selected. Generally, when the flue gas temperature is lower than 120 ° C, and the filter material is required to have acid resistance and durability, polyester flannel and polyester needle felt are often used; when high temperature flue gas (<250 ° C) is used, graphitization is mainly used. Glass fiber cloth; in some special cases, carbon fiber filter materials are used. It is important to control the speed at which the flue gas passes through the filter material during operation of the bag filter (called the filter speed). Generally, the filtration speed is 0.5-2 m/min, and the efficiency of the particles larger than 0.1 μm is over 99%, and the resistance loss of the device is about 980-I470Pa. Yantai Belief Cap Co.,Ltd. , https://www.beliefcap.com
The dust bag is made of a woven filter cloth and a non-woven felt, and the dust-containing gas is filtered by the filtering action of the fiber fabric. Dust bag is divided into Metasia needle felt bag, glass fiber needle felt bag, Flumes needle felt bag, polyester needle felt bag, polyester anti-oil needle felt, polyester anti-static needle felt. Cloth bags, etc. Uses: Widely applicable to smelting, iron-smelting coke carbon ink, power generation, cement, chemical, refractory materials and other enterprises under high temperature conditions, flue gas purification, carbon black capture, recycling materials, smoke and dust removal.
The dust bag is the heart of the bag filter. Generally, it is a dust bag or a filter bag. The dust bag is a key part in the operation of the bag filter. Usually, the cylindrical filter bag is vertically suspended in the dust collector.
A dust collector or dust removal device is a device that separates dust from the flue gas. The bag filter is also called a filter type dust collector. It is a dry type high-efficiency dust collector. It is a dust removal device that uses bag filter elements made of fiber fabric to capture solid particles in dusty gas. The principle of action is that the dust particles are intercepted by the inertial force and the fiber collision when the fiber is wrapped around the filter cloth.
In pulsed and air box type pulse dust collectors, dust is attached to the outer surface of the filter bag. When the dust-laden gas passes through the dust collector, the dust is trapped on the outer surface of the filter bag, and the clean gas passes through the filter material and enters the inside of the filter bag. The cage inside the filter bag is used to support the filter bag to prevent the filter bag from collapsing, and it helps to remove and redistribute the dust cake.
The fabric and design of the dust bag should be as efficient as possible, easy to dust and durable. The selection of dust bag is very important, it directly affects the dust removal effect of the dust collector. The dust bag is selected from the following aspects: gas temperature, humidity and chemical, particle size, dust concentration, filtration wind speed, clear Dust methods and other factors.